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SC Gmat Prep2 - extinction

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Source: — Sentence Correction |
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Re: SC Gmat Prep2 - extinction

by iamcste » Fri Nov 14, 2008 6:17 am
smallsorrow wrote:very strange construction ... can anyone reveal the idiom behind that...
Thanks!!

"The number of ..." uses singular verb is what I could identify

and hence "is " over 800..both are not underlined hence not helpful

Observations

E is passive "by humans"

B.. C ing" progressive tense means humans are still forcing while sentence gives data about the past ( last half millenium)


D..complete mess...it says that plants and animals are known...can plants and animals know anything
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by stop@800 » Fri Nov 14, 2008 6:55 am
D
that are known that humans forced...
that... that is looking weird

E
known as having been forced is wrong

ABC
known to / as / for
known to is the correct construction


B known as having forced to become....is incorrect
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by karmayogi » Fri Nov 14, 2008 9:47 am
Except A, all are awkward.

One doubt: "The number of A and B..." is plural or singular? If we read it as "The number of A and the number of B..." then it's plural else it's singular.
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